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Table 4 The comparison according to the mismatch between the PI and LL

From: Does minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) influence functional outcomes and spinopelvic parameters in isthmic spondylolisthesis?

Parameters Mismatch Test§ p value
Normal (N = 14) Abnormal (N = 10) (Sig.)
Δ Visual Analogue Scale (VAS) for back
Mean ± SD 6.71 ± 1.20 6.50 ± 1.17 − 0.426 0.670
Median (range) 7 (5–8) 6 (5–8)
Δ Visual Analogue Scale (VAS) for leg
Mean ± SD 6.28 ± 1.89 6.70 ± 0.82 − 0.333 0.739
Median (range) 6 (1–8) 7 (5–8)
Δ Oswestry Disability Index (ODI)
Mean ± SD 32.64 ± 11.55 41.90 ± 8.69 − 2.056 0.040 (S)
Median (range) 36.50 (− 3 to 47) 45.50 (27–51)
Δ Pelvic incidence (PI)
Mean ± SD − 0.34 ± 0.86 − 0.03 ± 0.26 − 0.709 0.478
Median (range) 0 (− 2.80 to 0.60) 0 (- 0.40 to 0.30)
Δ Pelvic tilt (PT)
Mean ± SD 0.88 ± 4.30 − 4.19 ± 6.43 − 2.288 0.022 (S)
Median (range) 1.20 (− 5.10 to 5.70) − 5.90 (− 10.70 to 9)
Δ Sacral slope (SS)
Mean ± SD − 1.05 ± 4.46 4.49 ± 6.49 − 2.317 0.020 (S)
Median (range) − 1.15 (− 6.50 to 5.10) 7.10 (− 9 to 10.80)
Δ Lumbar lordosis (LL)
Mean ± SD − 3.60 ± 5.05 6.73 ± 9.93 − 2.698 0.007(S)
Median (range) − 2.25 (− 12.80 to 4) 9.80 (− 13 to 14.60)
ΔL1–L4
Mean ± SD − 2.17 ± 5.20 − 2.82 ± 8.10 − 0.293 0.769
Median (range) − 3.15 (− 11.20 to 7) − 5.05 (− 12.30 to 7.80)
ΔL4–S1
Mean ± SD 2.75 ± 4.19 5.31 ± 4.04 − 1.642 0.101
Median (range) 2.95 (− 5 to 10.20) 7.90 (− 1.60 to 9)
Δ Segmental lordosis (SL)
Mean ± SD 2.34 ± 2.99 7.26 ± 3.44  − 3.165 0.002 (S)
Median (range) 3.15 (− 6.20 to 5.80) 6.55 (0.80–12.20)
  1. Δ VAS: VAS baseline–VAS final, Δ ODI: ODI baseline–ODI final, Δ PI: PI at final–PI baseline, Δ PT: PT final–PT baseline, Δ SS: SS final–SS baseline, Δ LL: LL final–LL baseline, Δ L1–L4: L1–L4 final–L1–L4 baseline, Δ L4–S1: L4–S1 final–L4–S1 baseline, Δ SL: SL final–SL baseline, § Mann–Whitney U test., p < 0.05 is significant and Sig.: Significance